There have been many defenses made of Spock's emotional displays in both STID and the 2009 film. Even if I agreed that these displays are fully justified given the plot, I wouldn't agree that this version of the character is nearly as interesting as the one we've come to know over the past 45+ years. I guess one could argue that that Spock yelling, crying and screaming every movie is a "fresh" approach. But I don't think this is a character who needs a fresh approach. I think of many of the best episodes and movies of Trek and many of the best showings of the character, and in those appearances, he barely reveals any emotion - or if he does it's very subtly done. Now, I don't object to Spock occasionally showing emotion. There were always those "exceptions" - those occasional episodes where he shows glimpses of emotion or goes all out. In fact, these were partly what made the character tantalizing over the years of his existence, partly because they reminded us about the parts of himself that he was always repressing. I also think these occurrences made him interesting because they were relatively rare. But they're rare no longer. And I feel they've gone way overboard. They've turned these exceptions into almost the rule - in two movies in a row - and I just don't think it's a very interesting approach to the character in the least - even if it can be argued that the plot of the movie justifies it.